Vol. 1(2) SEP 2011 - SAVAP International

Academic Research International
ISSN: 2223-9553
Volume 1, Issue 2, September 2011
OPTIMIZATION DIAMETER OF PIPE
AT FRESH WATER NETWORK SYSTEM
Chairil Saleh
Department of Civil Engineering
University of Muhammadiyah, Malang
INDONESIA
Chairissy@yahoo.com,
Sulianto
Department of Civil Engineering
University of Muhammadiyah, Malang
INDONESIA
ABSTRACT
This paper studied optimization diameter of pipe. Diameter of pipe was due to fresh water
network system. Location of study was at Turen District, Malang Regency, and Indonesia. The
methodology consisted of optimization using genetic algorithm so that was got average rest of
pressure. Results could be used as consideration to optimize service of fresh water use.
Keywords: optimization, diameter of pipe, rest of pressure
INTRODUCTION
The most common type of coherent structure associated with secondary flow in curved
bends was the main cell of cross-stream circulation, or helix, within which the fluid particles
follow a helicoidal path (Constantinescu et al., 2011), If the bed was not strongly deformed, the
main cell extends over a large part of the cross section. Once the pool-point bar structure
developed, this cell generally extended only over the outer, deeper part of the channel
(Constantinescu, 2011),
Channel geometry equations which relate discharge to channel width or channel cross
section were considered to be the most reliable (Tayfur and Singh, 2011). Some author
developed regression equations relating discharge to channel cross section to yield the most
satisfactory results. Once hydraulic geometry equations were defined for a stream, the crosssection
area measurements was all that was needed for estimating the discharge.
Step-pool geometry, including relationships between step length, step height, grain size,
stream gradient, and channel width, and variance in these relationships, had been investigated to
seek insights into formative processes, hydraulic controls, and analogies to lower-gradient
syatems (Wilcox et al., 2011). Step-pool sequences, in which flow plunges over channel-
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